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Better implementation of variadic templates with no longer needing a special 0 template version

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This commit is contained in:
Jason Turner
2009-06-17 01:10:41 +00:00
parent 146bdf8ea1
commit e231cb4cf7
1 changed files with 4 additions and 24 deletions
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28
dispatchkit/proxy_functions.hpp
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@@ -66,27 +66,6 @@ namespace dispatchkit
}; };
// Build param type list (variadic)
template<typename Ret>
std::vector<Type_Info> build_param_type_list(const boost::function<Ret ()> &f)
{
std::vector<Type_Info> ti;
ti.push_back(Get_Type_Info<Ret>::get());
return ti;
}
// call_func implementations (variadic)
template<typename Ret>
Boxed_Value call_func(const boost::function<Ret ()> &f, const std::vector<Boxed_Value> &params)
{
if (params.size() != 0)
{
throw std::range_error("Incorrect number of parameters");
} else {
return Handle_Return<Ret>()(f);
}
}
struct Param_List_Builder struct Param_List_Builder
{ {
Param_List_Builder &operator<<(const Boxed_Value &so) Param_List_Builder &operator<<(const Boxed_Value &so)
@@ -111,7 +90,7 @@ namespace dispatchkit
}; };
} }
#define BOOST_PP_ITERATION_LIMITS ( 1, 10 ) #define BOOST_PP_ITERATION_LIMITS ( 0, 10 )
#define BOOST_PP_FILENAME_1 "proxy_functions.hpp" #define BOOST_PP_FILENAME_1 "proxy_functions.hpp"
#include BOOST_PP_ITERATE() #include BOOST_PP_ITERATE()
@@ -208,7 +187,8 @@ namespace dispatchkit
namespace dispatchkit namespace dispatchkit
{ {
template<typename Ret, BOOST_PP_ENUM_PARAMS(n, typename Param) >
template<typename Ret BOOST_PP_COMMA_IF(n) BOOST_PP_ENUM_PARAMS(n, typename Param) >
std::vector<Type_Info> build_param_type_list(const boost::function<Ret (BOOST_PP_ENUM_PARAMS(n, Param))> &f) std::vector<Type_Info> build_param_type_list(const boost::function<Ret (BOOST_PP_ENUM_PARAMS(n, Param))> &f)
{ {
std::vector<Type_Info> ti; std::vector<Type_Info> ti;
@@ -219,7 +199,7 @@ namespace dispatchkit
return ti; return ti;
} }
template<typename Ret, BOOST_PP_ENUM_PARAMS(n, typename Param)> template<typename Ret BOOST_PP_COMMA_IF(n) BOOST_PP_ENUM_PARAMS(n, typename Param)>
Boxed_Value call_func(const boost::function<Ret (BOOST_PP_ENUM_PARAMS(n, Param))> &f, Boxed_Value call_func(const boost::function<Ret (BOOST_PP_ENUM_PARAMS(n, Param))> &f,
const std::vector<Boxed_Value> &params) const std::vector<Boxed_Value> &params)
{ {